Which of the following does not describe the structure of DNA?
double helix
o nucleotide polymer
contains adenine guanine pairs
sugar-phosphate backbone

How many cells are our body made of ? ♡

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Plz ! having a smooth seeds is the dominant trait. having wrinkled seeds is a recessive trait. the offspring of two plants with smooth seeds, a. must have smooth seeds. b. may have smooth or wrinkled seeds. c. must have wrinkled seeds. d. have a 25% change of having smooth seeds.